Elmo and Grover are borrowing things from their friends to make a mystery creation. Boys and girls ages 4–6 will want to find out what it is in this?Sesame Street?Step into Reading Step 1 leveled reader.Elmo and Grover are borrowing things from their friends to make a mystery creation. Boys and girls ages 4–6 will want to find out what it is in this?Sesame Street?Step into Reading Step 1 leveled reader.